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Finding the Fourth Proportional to 526.77, 726.95 and 316.87

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Solution

The fourth proportional to 526.77, 726.95 and 316.87 is: 437.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.77 : 726.95 = 316.87 : x
  2. Step 2: Convert to fraction form
    526.77/726.95 = 316.87/x
  3. Step 3: Cross multiply
    526.77x = 726.95 × 316.87
  4. Step 4: Simplify right side
    526.77x = 230,348.65
  5. Step 5: Solve for x
    x = 230,348.65/526.77
  6. Step 6: Final answer
    x = 437.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.